Transmission-drive for dirigible airships.



S. JELALIAN.

TRANSMISSION DRIVE FOR DIRIGIBLE AIRSHIPS.

APPLICATION nun) JUNE 11, 1914.

Patented Nov. 24, 1914.

SAEKIS JELALIAN, or" cneivsroiv, anonn rare-Ian.

aliases.-

TRANSMISSION-DRIVE FOR n IR-IMBLE AIRSHiP;

specification ef Lette rs Patent. ya temtsd Nov; 2 43-, 11914,

Application filed June 11, 1914. Serial 1%. 844,554.

To all whom it may concern:

Be it known that I, SARKIs JELALIA-N, a

citizen of the United States, residing atthe city of Cranston, inthe county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Transmission-Drives for Dirigible Airships, of which the following is a specification.

The present invention relates to a manually-operate'd device for transmitting power to drive the propellers and wings of dirigi-' ble' air-ships.

The object in view is to provide a transmission device designed to be located between a pair of motors,'to easily permit of transmitting the power medium to cause a diri'gible' air-ship to continue to travel forwardly, whenever one motor, of the pair, be-' comes disabled.

My invention consists of the novel construction and combination of parts, as here inafter described and claimed, reference being had to the accompanying sheet of drawings, in which,--

Figure 1 is a side elevation of my ini proved device; Fig. 2, a plan ofthe device; Fig. 3, a view showing the relation of the device as applied to the car of a dirigibleairship, and, Fig. 4, a detail view, showing the main sprocket as designed ior a double chain connection.

Like reference characters indicate like parts.

My device, which is designed to be operable within the car of a dirigible air-ship, consists of a pair of motors a, a which have their main shafts -b, b in axial alinement to each other and transverse of the body of the car A, and each shaft -bhas an integral concentric collar b from which projects a fiat-sided extension --b The outer ends 9f the shaft-extensions b are separated from each other in order to provide a narrow working space c for a hand lever A sprocket wheel cZ is designed to have a sidewise sliding movement upon the extensions -Z and said wheel has a chain connection d with a sprocket wheel e. The wheel e has a sidewise sliding movement on a flat-sided portion -f-, formed betweendntegral collars -f concentric to a crankshaft -f On the shaft f* is made fast a sprocket wheel gwhich has a chain connection g. with asprocket eaqlread of the latter is secured a propeller The factors "d'' are arranged to revolve in the same direction, and the main sprocket '-'d 'hes' its-journal bearing for each extension -12 of a length sufficient to allowsaid sprocket, when pressed upon its side face by the hand of the operator, to pass freely across the 'gap or space and upon the other adjacent extension -'-Z and thereby to'caus'e this propellers j through the chain connections d +9 to revolve in the opposite direction. To retain the main sprocket in position upon either'eXtensioi'i I employ a lever k-, which is operable longitudinally of the'ca'r and extending at an incline downvv'ardiy toward the axial centers of the mo tor shafts b. The lever kis slidable upon a fixed support Z, and said lever has a disk -7c. formed at one end thereof to fit in the space c between the shaft-extensions b and a handle formed at its opposite end, as at ]c' A pin is secured in the operating lever lcto form a stop, as m-, to limit the downward movement of said lever. It is therefore apparent that to obtain a transmission drive all that is required is to withdraw the lever -k from its holding position against the sprocket -d and the latter made free to be easily moved to its normal point upon either motor shaft. .Thus it is seen that whenever one motor, of a pair, becomes inoperative, my improved device readily permits of the opposite motor being thrown into action, to cause the craft to continue to travel forwardly.

In Fig. 2 I show my improved device in which the sprocket cZ- has a single chain connection -d, to transmit power to drive a single propeller shaft c' and in order to make clear that the device may be advantageous in driving all of the propeller and wing-shafts, shown in my above-men tioned pending application, the said sprocket d-may have two sets of teeth -('Z*, d*-, (see Fig. 4,) one set to engage the chain connection d and the other set to engage the chain connection indicated by dotted lines -(Z in Fig. a, in transmitting the combination ol motor-shafts arranged to revolve in the same direction, each shaft in axial alineinent avith the other, and each shaft having a projecting flat portion; a narrow space between the ends of the flattened portions of said shafts; a sprocket Wheel slidable upon either flattened portion of said shafts, said Wheel designed to engage one or more chain connections; a fixed support; a hand lever mounted in said support, said lever adapted to entervvithin the said space and to hold the saidwheel to its normal Working position upon either inotorshaft. i

2. In a device of the character described,

the combination with the propeller-shafts.

and reciprocating Wing-shafts of a dirigi hle ship or pair or mot-er-saatts ara revoltie seine c... iction each snai having a prpjecting flat portion; a

sprocket Wheel designed to slide upon either fiat portion of said shafts, said Wheel having a plurality of sets of teeth for engagement with chain connections to drive said propeller-shafts said Wing-shafts, and a manually-operated lever to hold said Wheel in position upon the Hat portion of either motorair-ships having revolving propeller-shafts 3 and reciprocating Wingshafts, the combination of a pair of mot0r-shafts arranged to revolve in the same direction, said shafts ha ing their axial centers in alinement with each other and each shaft having a flattened inner end portion; a narrow space between the inner end portions of said motor-shafts; a sprocket wheel having a ournal bearing of a length to permit said Wheel to slide across the space and upon the flattened portion of either n1oto1'shaft, and said Wheel having independent sets of teeth; and a hand lever to enter the space and hold said Wheel in position upon either motor-shaft.

In testimony whereof I affix my signature in presence of two Witnesses.

SARKIS JELALIAN.

Witnesses: AsAooAR ELLIAN, Seams SHAMIRIAN. 

